At the inlet of a steam turbine the following information are given: p=1000 kPa, T=500 deg-C, u = 3124.3 kJ/kg, v = 0.35411, V=20 m/s, z=10 m, and mdot=10 kg/s.

determine the inlet area.

Determine the flow work at the inlet in MW

Determine the rate of transport of flow energy (Jdot).

If you neglect ke and pe in the expression for j, how would the answer in part c change? in percentage

A homemade capacitor is assembled by placing two 10 in pie pans 8 cm apart and connecting them to the opposite terminals of a 9 V battery.

(a) Estimate the capacitance.
  pF
(b) Estimate the charge on each plate.
pC
(c) Estimate the electric field halfway between the plates.
V/m
(d) Estimate the work done by the battery to charge the plates.
J
(e) Which of the above values change if a dielectric is inserted? (Select all that apply.)

electric fieldchargework done by the batterycapacitance

1- water at 100 degree and quality X=0.8 % has mass 0.1 kg find volume =?
2- R-410 at -10 degree and 100kpa find enthalpy h and energy u
3- water at 200kpa , v = 0.08 m^3/kg find pressure p and Quality x
4- water at 200 kpa , T= 270 degree find specific volume
5- water at p= 1200 kpa , V= 0.18m^3/kg find T,u

A solar cell generates a potential difference of 0.320 V when a 445.0 ? resistor is connected across it and a potential difference of 0.504 V when a 945.0 ? resistor is substituted.

A) What is the internal resistance of the cell in Ohms?

B) What is the emf of the cell?

C) The area of the cell is 27.0 cm² and the rate per unit area at which it receives light energy is 58.0 mW/ cm². What is the efficiency of the cell for converting light energy to thermal energy in the 945.0 ? external resistor?

A particle moves in the x-y plane with constant acceleration. At time zero, the particle is at r = <5.0, 2.0> m and has velocity v = <-4.0, 9.0> m/s. The acceleration is constant and is given by a = <4.0, 6.0> m/s2 . (a) Find the velocity at t = 2.0 s. (b) Find the position at t = 4.0 s. Give the magnitude and direction of this position vector. (c) Sketch (approximately to scale) the vector diagrams for vi , vf , and ?v, and for ri , rf , and ?r

an ideal gas has C_v=(7/2)R. A 2.00 mole sample of gas starts at P=1*10^5 Pa and T=300K. determine the total P, V&T for each of the following cases, as well as ΔE_int, W and Q

a) gas is heated at constant P to 400K

b) gas is heated at constant V to 400K

c) isothermal conpression to P=1.2*10^5 Pa

d) adiabatic to compression P= 1.2*10^5

1. Consider a galvanic cell consisting of the following two redox couples:

            Ag⁺(0.010M) + e^- --> Ag(s)    E⁰ = +0.80 V

         Cr³⁺(0.010M) + e^- --> Cr(s)   E⁰ = -0.74 V

Write the equation for the half reaction occurring at the cathode

Write the equation for the half reaction occurring at the anode.

Write the equation for the cell

What is the standard cell potential E⁰_cell for the cell?

Realizing the nonstandard concentrations, what is the actual cell potential, E⁰_cell for the cell? What is the value of the Nernst equation

V & T Faces, Inc., is a makeup company. They currently produce small plastic containers used to provide samples of the products. Management is interested in outsourcing the production of the plastic containers to a reputable manufacturing company that can supply the containers for $0.04 each. V & T Faces, Inc., incurs the following monthly production costs to produce 1,000,000 plastic containers internally:

If production is outsourced, all variable production costs and 70 percent of fixed production costs will be eliminated.

Required:

Perform differential analysis. Assume making the containers internally is Alternative 1 and buying the containers from an outside manufacturer is Alternative 2.

• Which alternative is best? Explain.
• Summarize the result of outsourcing production of the containers.
• Assume all the facts of this problem remain the same. However, management of V & T Faces, Inc., has an opportunity to lease the space it currently uses to produce containers for $4,000 per month if production of the containers is outsourced. Determine if V & T Faces, Inc., would be better off outsourcing production.
• Identify at least one qualitative factor that should be considered before management decides to outsource production of the containers.

A) Relying STRICTLY on our classroom discussion: the US corporate tax rate was recently reduced from 35% to 21%. In the near future, would you expect the target (optimal) D/V ratios of US companies to increase or decrease as the result of this change? (2-3 sentences)

B) What LEGISLATIVE change (i.e. a law or a regulation), if adopted, would most likely cause the target (optimal) D/V ratios of US companies to move in the OPPOSITE direction compared to the one you predicted in part (A)? (2-3 sentences)

C) Relying STRICTLY on our classroom discussion: Assume US personal tax rates on capital gains will be reduced next month. In the near future, would you expect the propensity to pay dividends among US companies to increase or decrease as the result of this change? (2-3 sentences)

D) The need for financial flexibility is sometimes used as explanation for the tendency of US firms to utilize LOWER D/V ratios compared to the (optimal) target ratios based on the trade-off between tax benefits and distress- or agency-related drawbacks associated with debt financing. Give one argument for why the need for financial flexibility is likely NOT the reason for relatively low D/V ratio utilized by Walmart. (2-3 sentences)